Sierra 18-8808-2 Mag Force Spark Plug Wire Set for Mercruiser 4-Cylinder Engines with Conventional Ignition

The Sierra 18-8808-2 Mag Force spark plug wire set is a direct-fit ignition wire kit built for Mercruiser 4-cylinder engines equipped with conventional ignition systems. The set uses a stainless steel wound conductor for strong horsepower and engine performance along with superior RFI suppression, protecting sensitive onboard electronics from interference. A Kevlar core runs through each wire for maximum durability and long service life, while premium silicone jacketing and silicone boots shield the wires against the high underhood temperatures typical of a marine engine compartment. Corrosion-resistant stainless steel terminals are used at both the spark plug and distributor connections to maintain reliable conductivity in the marine environment.

The kit includes five wires sized for correct routing on applicable Mercruiser 4-cylinder engines: one 13-inch coil wire, one 23-inch spark wire, one 26-inch spark wire, one 34-inch spark wire, and one 39-inch spark wire. It is engineered as a like-for-like replacement for the original ignition wiring on the applicable engine models, restoring consistent spark delivery and smoother running.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8808-2
• Product Type: Spark Plug Wire Set
• Ignition Type: Conventional
• Coil Wire Length: 13 inches
• Spark Wire Lengths: 23 inches, 26 inches, 34 inches, 39 inches
• Conductor Material: Stainless steel
• Core Material: Kevlar
• Jacket and Boot Material: Silicone
• Terminal Material: Stainless steel
• Weight: 1.08 pounds
• UPC: 808282228705

Fitment

• Mercruiser Model 165, 4-cylinder, Delco distributor, 1987, serial number 0B434940 to 0B774251
• Mercruiser Model 170, 4-cylinder, Delco distributor, 1985-1986, serial number 6916779 to 0B434940
• Mercruiser Model 190, 4-cylinder, Delco distributor, 1985-1986, serial number 6916779 to 0B436390
• Mercruiser Model 3.7L, 4-cylinder, Delco distributor, 1988-1989, serial number 0B774252 and up
• Mercruiser Model 3.7LX, 4-cylinder, Delco distributor, 1988-1989, serial number 0B775249 and up
• Mercruiser Model 470, 4-cylinder, Delco distributor, 1976-1984, serial number 4208370 to 6916778
• Mercruiser Model 485, 4-cylinder, Delco distributor, 1980-1982, serial number 5685394 to 6218036

Frequently Asked Questions

What engines does the Sierra 18-8808-2 spark plug wire set fit? The 18-8808-2 fits Mercruiser 4-cylinder engines with conventional ignition systems, including Model 165 (1987), Model 170 (1985-1986), Model 190 (1985-1986), Model 3.7L (1988-1989), Model 3.7LX (1988-1989), Model 470 (1976-1984), and Model 485 (1980-1982), all with Delco distributors.

How many wires come in the 18-8808-2 wire set? This Sierra Mag Force set includes five wires: one 13-inch coil wire and four spark plug wires measuring 23 inches, 26 inches, 34 inches, and 39 inches.

What is the wire conductor made of? A stainless steel wound conductor is used throughout the 18-8808-2 set, chosen for strong horsepower delivery, engine performance, and superior RFI suppression for sensitive electronic systems.

Does this set use a Kevlar core? Yes, each wire in the Sierra 18-8808-2 set has a Kevlar core for maximum durability and long service life.

What protects the wires from engine heat? Premium silicone jacketing and silicone boots cover the wires and terminals in the 18-8808-2 set, providing high-temperature protection in the engine compartment.

Is this wire set designed for conventional or electronic ignition? The Sierra 18-8808-2 is built specifically for Mercruiser 4-cylinder engines with conventional ignition systems, not electronic ignition.

How much does the 18-8808-2 spark plug wire set weigh? It weighs 1.08 pounds.

What material are the terminals made of? The spark plug and distributor terminals on the 18-8808-2 are stainless steel, chosen for corrosion resistance and maximum conductivity.

Will this set fit a Mercruiser 3.7LX engine? Yes, the 18-8808-2 fits the Mercruiser 3.7LX with a Delco distributor for the 1988-1989 model years, serial number 0B775249 and up.

Is the 18-8808-2 a genuine Sierra part? Yes, this is a genuine Sierra Mag Force wire set identified by part number 18-8808-2, manufactured to meet or exceed the performance of the original ignition wiring it replaces.

Does the wire length differ between the coil wire and spark plug wires? Yes, the coil wire in the 18-8808-2 set measures 13 inches, while the four spark plug wires measure 23, 26, 34, and 39 inches respectively to match correct engine routing.

What Mercruiser serial number range applies to Model 470 with this wire set? For the Mercruiser Model 470, the 18-8808-2 applies to 1976-1984 engines with a Delco distributor, serial number 4208370 to 6916778.